saunders



H. N. SAUNDERS.

MILKING MACHINE. APPLcATloN FILED APR. 15.1915'.

Igltefod June 24, 1919.

2 SHEETS-SHEET z. l

- v El Q R. N. SAUNDEHS.

IVIILKING MACHINE.

APPLICATION FILED APR. 15| 1916.

" Patented June 24,1919.

2 SHEETS-SHEET 2.

II II f//m Richard NaI-Hwy aumm /bvenar lav -f Hbamev incurranV NonrrrEY sammnns, or AUCKLAND, Nnw ZEALAND.'

p 4111mm1re-MACHTNn.

Specification ot Letters Patent. Patented Jun 24, 1919.

v L Application led April 15, 1916. Serial No. 91,466.

'.'To all whom tgmay concern:

Be it known that I, RICHARD `Nolrrnn SAUNDERS, a subject of His Majesty the King of the United Kingdom of Great Britain and Ireland, resident of thecity of Auckland in the Provincial District of` -ucklandand Dominion of New Zealand,

have invented newy and useful Improvementsy in Milking-Machines, yof which the following is a specification.

The improvements projected herein re- .I late to 'the machinery or `apparatus emlli ployed in mechanical milking, and more particularly to certain parts thereof, such as, thereleasing means, the pulsator, the' teat Vcups, and the teat cups claws.

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By this invention ymeans are rovided Vwhereby the rubbers or rubber in ationl inp the teat cups may be readily tightened, thus enabling a serious defect in milking plants to be easily overcome, also the teat cups are enabledto be cut off from themilk and vacuum `pipe by the provision of taps inthe ends of the claws. rIfhe pulsator and thereleasing means are both operated by the same operating means, and each is adapted `to perform its function with a 'minimum of movement.

The. several improvements will be more readily understood on reference to the accompanying drawings, in which, p

Figure l shows in elevation the general arrangement of the parts referred to,

Fig. 2 is a side view of portion of the milk collecting receptacle or receiver showing means v'for' releasing the milk therefrom,

Fig. 3 is a front view of portion Iof the milk collectin vessel or receiver Showing valve tace an port, the valve itself .beingA removed. l i

Fig. 4f is a plan view of the form of pulsator used,

Fig. 5 is an underneath view or bpttom plan of the upper sliding or valve portion of vthe pulsator,

Fig. 6 is a sectional view ofthe pulsator taken through YTY 4, 'y Fig. 7 is a sectional. e evation o f the 1mproved teat cup,lshow1ngtelescopic casing,

Fig. 8 shows in elevation an alternatlve means for operating lthe milk releasing valve, y

Fig.. 9 is a longitudinal sectional elevation of one end of a teat cup claw showing tap therein, and

Fig. 10 is a cross-sectional elevation of a.;

tcat cup claw taken through X--X, Fig. 9..'K In the draw1ngs,'1 represents the vacuum.'

pump driven from any convenientsource of power in the usual way, 2 themilk receiver, 3. pipe connecting milk receiver with vacur uur pump, 4t the main milk pipe, 4*? the vacuum pipe, 5 the pulsator, 6 the pulsator connections to teat cups, 7 the milk connec'- tions to teat cups, 8 the teat cups, 9fmilk releasing valve,10 eccentric and rod for operating sam'e, and-11 push rod for reciproca@ ing valve of pulsator. 7

The vacuum pump 1 is of usual construc-` tion and draws the milk from the teat cups" Sfby means of the milk and vacuum' pipes and 4 and connections into the milk receiver 2, from which it is released' by the action ofthe valve 9. The valve face 10v a instA which the valve 9 works 1s provided with a port 12 therein, and the'valve 9 with two inclined milk chambers 13,-each having anl automatic iap valve 14 at its outer or lower end. The chambers 13 are'situated in the valve 9, a distance apart suilicient to allow only one chamber at a time to be 'open 'to the port 12, the other .chamber being meanwhile cut oi therefrom, and as the portk 12, the milk being discharged from the chambers 13 during the period theyi are` closed or cut olf from the port 12, or over 'one ofthe air slots 9a in the face 10 and consequently out of communication with the vacuum of the plant which latter position permits the milk by its own weightto force Yopen the flap valve at the lower end of the chamber and to escape 'into a chutegl, or

its equivalent placed directly beneath.f

The pulsatorv (Figs. 4, 5 and 6)'cfo'1`1sists of a lower portion 16 having threeV vertical passages 17, 18 and 19 therein,- passage 17 eing connected with the main vacuum pipe 4 and passages 18` and 19, indeperuilently\l of 'each other with the' ulsator pipes 6 `,to

the teat cups 8. The va ve or uppersliding portion 20 has a T shaped 'recess or hollow `formed in its underneath surface, the portion 21 of which is always4 over orf'in communication with the vertical passage. -17 connected with the vacuum pipe el. The valve 20 is worked backward and forward or reciprocated. on the lower portion 16 by the push lrod 11'connected to thevalve 9, s0 a tap38 the sides of the plug of which arel 60 as to cause the vleg 23 of the T shaped recess or hollow to come over the passages,l 18 and ,19, and connect them one at a'time with the passage 17 and allow the vacuum to actin the pulsator pipes 6. While either ofV the passages 18 or 19 is connected with the-passage 17, theother is by reason ofthe position of the valve 20 uncovered or; open to `the .atmosphere (Fig. 4) p and this alternate and separate connecting'of the passages 18 l and 19 with the passage 17, and the opening y grooves 26 is most suitable forrmaintaining ofthe former to the' atmosphere producesl thenecessary pulsations which. are conveyed by the tubes or pipes 6 to the's'pace between the teat Aup'rubbers and casings.

The improved teat cup as illustrated in l lFig.. 7, is formed with its'casing in two sections, an upper'sectionl 24, andA a lower section 25 made to telescope or slide therein. Around the upper end of the lower section 25 is provided a series of grooves l26 in one of which a rubber-ring-27 engages so as to. keep the teat cup casing, extended, and also to insure an air tight joint being made between thetwo sections 24 and 25. The rub-A ber inflation or tubing 2 8 is secured in the casing in the usual way, and to tighten same it is only necessary to extend the casing and force the rubber ring into whichever ofA theV the extension. By these means the-inaton is enabled to be kept tight or in a constant state of tension. 1 In Fig. 8, an' alternative means for im?" parting a reciprocating motion to the milk releasing valve 9 is shown. These means consist of a cylinder 29 with a piston 30 working therein, the piston rod 31 being connected tothe valve 9. Vacuum from a suitably placed pulsator or any other convenient f source of similar power is caused to act in vthe back end of the cylinder 29l through the pipe 32, with the result that the piston 30v is drawn toward the back end of the cylinder and imparts movement in one direction to the valve 9. The piston 30 on nearing the l .end of its stroke strikes, and causes to open -an inlet valve 33 in the cylinder end, causing the vacuum Within the cylinder to be destroyed which allows the piston andvalve to be moved in the reverse direction or re: turned to their'original positions by the coiled spring 34, on the rod 35 connected to the opposite end of the valve 9, and"which is compressed between the stationary guide 36 and stop37 on the rod 35 on the first or forward movement of the piston and valve. `,In the claw end shown in Figs. 9 and 10 port'in the valve face.

chamber .40, and when the tap is given a half' turn, or' when its forward end 1s down instead of up, communication with .the teat cups throughv the milk and vacuumconnections is permitted.

Having now fully described my invention, what I desire to yclaim and secure by Letters Patent is 1. In machine milking apparatus, means for releasing the milk from the vacuum of the plant, comprisingl, a milk receiver; a

vertical valve face wit a single port therein, and a slot on each side of said port, secured to the side of said milk receiver at the bottom thereof; a vertical valve Working on said valve face; two inclined milk chambers mounted on said valve, and adapted to be placed separately in communication with the 2. In machine milkingapparatus, the com- ,bination with a vacuum plant of a milk receiver connected thereto, a vertical valve face provided with 'a port, and an air slot 0n each side of the latter, a milk releasing valve, two inclined milk chambers thereon provided at their lower ends with automatic flaps, and means for actuating. the milk releasing'valve to cause each Ichamber to alternately fill from the port in the valve face, and to alternately discharge its content-s on the opening of its outer iap valve, when the said chamber is opened to the atmosphere.

' 3. In machine milking apparatus, a teat cup, consisting of a .casing comprising two telescoping portions, the outside periphery of the inner portion being provided with a series of grooves which are adapted to receive a rubber ring for the purpose of keeping the casing extended.

g 4. In machine milking apparatus, a toutA 

